Hello I'm going to be getting some pullets soon- I'm new to back yard chicken keeping, and recently rescued a 15-20 month old great preyneese/lab??? Mix (we think Jan, not sure) anyway I'm wondering what is the best way to introduce him to "his" pullets? He chases birds out of our yard, and there's even a rooster in our alley that came in our yard one day and my dog chased him out. Is there hope, for him to be their protector? That's really why we got him was to watch our flock. But I'm really nervous now. Any tips and advice?!? We also have 2 older pitbulls. Oh and I have a cockatiel in my home with all the dogs as well (caged) and they don't bother him. Thanks!